Trowel.



T. N. WILSON.

TROWEL.

APPLICATION FILED FEB. 25, m5.

1,1662%. Patented Dec. 28,1915.

COLUMBIA PLANOGRAPH c0" WASHINGTON, D4 c.

TINTT'EU @TATE@ PATENT @FFTUE.

THOMAS N. WILSOIV, OF SPOKANE, "WASHINGTON, ASSIGNOB OF ONE-HALF TOAARON Gr.

'WI'IMER, OF PORTLAND, OREGON.

TROWEL.

Specification of Letters Patent.

Patented Dec. 28, 1915.

Application filed February 25, 1915. Serial No. 10,478.

1 '0 all whom it may concern:

Be it known that I, THOMAS N. WVILson, a citizen of the United States,residing at Spokane, in the county of Spokane and State of VV-ashington,have invented certain new and useful Improvements inTrowels; and I dodeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to improvements in trowels and more particularlyin the means for connecting detachable handles thereto.

The object of the invention is to provide a trowel constructed with aremovable handle with simple means for firmly clamping the handle to theblade.

Another object is the arrangement in a trowel of a bead or securingstrip rigidly connected with the blade of the trowel and designed to beengaged by a reciprocating clamping member being designed to be lockedin adjustable position by an eccentric bolt.

With the above and other objects in view, the invention consists ofcertain novel features of construction, combination and arrangement ofparts as will be more fully described and claimed. 7

In the accompanying drawings :-Figure 1 represents a side elevation of atrowel embodying this invention. Fig. 2 is a detail longitudinal sectionon an enlarged scale. Fig. 3 is a transverse vertical section taken onthe line 33 of Fig. 1. Fig. 4 is a detail perspective view of the leverused in connection with the handle and the blade. Fig. 5 is a horizontalsection taken on the line 55 of Fig. 2.

In the embodiment illustrated, a trowel blade 1 is shown having a handle2 removably mounted thereon. The blade 1 has rigidly secured thereto, abar or head 3 here shown of dove-tail construction in cross sec tionwith its upper face rounded to facilitate the attachment of the handleclamping member 1. This member 4 is here shown in the form of an uprightshank 5 having an enlarged head 5 at one end provided on its lower facewith a longitudinally eX- tending dove-tail groove 6 which is shaped tolit and slide on the rib 3 of the blade 1 for adj ustably connecting thehandle clamping member at to said blade by means to be described.

An arm 7 extends laterally from the shank 5 in a. plane at right anglesthereto and on which the handle 2 is designed to be mounted and held inoperative position by any suitable means, a nut 8 being here shownscrewed on the outer end of the arm 7 beyond one end of the handle 2.The head 5 of the handle shank has a bore 9 extend ing transverselytherethrough and intersecting the groove 6 thereof, the major portion ofsaid bore being disposed in a plane above the plane of the groove.

A yoke-shapedlever 10 is employed for connecting the handle clamp to therib 3 and is designed to straddle the front end of said clamp with thecross bar of said yoke passing over the upper front end of the arm 7.The free ends of this yoke are preferably enlarged and provided withangular apertures 11 which are designed to receive the angular ends 12of a connecting or locking bolt 18. This bolt 13 is of a lengthcorresponding to the combined thickness of the head 5 and the two armsof the yoke 10 so that when it is inserted through these arms andthrough the bore 9 in said head, the terminals thereof will be disposedflush with the outer faces of the arms of the lever 10 and thus anypossibility of the bolt being accidentally turned is prevented.

Adjacent the angular ends 12 of the bolt 13 are two rounded portions 14which are designed to fit in the rounded portion of the bore at oppositesides of the head 5. The central portion of this bolt has an eccentric15 formed thereon which is designed to be disposed over the rib 3 inposition to engage said rib when the parts are assembled, whereby theforcing of the bolt through the apertures 11 and the bore 9 brings theeccentric portion 15 into binding engagement with the upper face of therib 3 and forces the head 5 upwardly, causing the walls of the dove-tailgroove 6 thereof to bear against the under side of the rib 3 and the camto grip the upper face thereof and thus securely lock the clampingmember A} to said rib. As shown, this bolt 13 has a longitudinallyextending slot 16 in the eccentric 15 thereof and projecting into aportion of the rounded portions of the bolt and which is designed torend r the eccentric portion of Y to the clamping the bolt resilient tofacilitate, its gripping action on the rib.

When the parts have been assembled as above described, the handle isfirmly locked to the blade and the trowel is ready for use and when soassembled no spaces or interstices are left to permit the lodgment ofplaster-or other material which would prevent proper operation of thehandle.

By adjustably mounting the handle on the blade 1, the position thereofmay be varied so that should a portion of the rib 3 become worn, a newunworn portion may be secured member and thus the life of the trowelprolonged.

I claim as my invention 1. A trowel comprising a blade having a rib, ahandle member mounted to slide on said rib, said member and rib havinginterlocking connections, and an eccentric member for engaging said riband locking said interlocking connections in engaged position, saideccentric having a longitudinally extending slot therein to provideresilient gripping faces.

QLA trowel comprising a. blade having a longitudinally extendingdovetail rib, a handle member having a dove tail groove for slidablyengaging said rib, said handle member having a bore extendingtransversely therethrough in a plane at right angles to and intersectingsaid groove, and a rotatable locking element disposed in said bore, saidelement having an eccentric thereon operable on the turning thereof toengage said rib and force said handle member up against the under sideof said rib and said element against its upper face for clamping saidhandle to said rib.

3. A trowel comprising a blade having a rib on its upper face, avhandleconnecting member comprising an upright having a head provided with alongitudinally extending dove-tail groove on its lower face forinterlocking engagement with the rib on said blade, said head having abore extending transversely therethrough and intersecting said groove,the major portion of the bore being disposed in a plane above thegroove, means for connecting the handle to said upright, a lever adaptedto straddle said upright and having apertures positioned to registerwith the bore in the head of said upright, and a locking elementextending through the apertures in said lever and through said bore,said element having gripping means for engaging the rib when the partsare in assembled position.

4;. A trowel comprising a blade having a longitudinally extendingdove-tail rib, a handle clamping member comprising a shank having alaterally extending arm at one end and a head at the other, said headbeing provided with a dove-tailgroove on its lower face for interlockingengagement with the dove-tail rib of said blade, said head having a boreextending transversely therethrough and intersecting said groove, :1yoke-shaped lever having angular apertures in the free ends of the armsthereof positioned to register with the bore in said head, with thecross bar of said yoke engaging the upper end of said upright, a lockingbolt adapted for insertion through the apertured ends of saidyoke-shaped member and a bore in said head, said bolt having angularterminals to fit the angular apertures in said yoke-shaped member andprovided at its central portion with aresilient eccentric for bindinglyengaging the rib for locking the handle to the blade.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

THOMAS N. WILSON. Witnesses S. L. WILSON, S. A. WILSON.

Copies of this patent may be obtained for five cents each, byaddressing" the Commissioner of Patents, Washington, D. G.

